Anorectal Manometry

Overview

Anorectal manometry is a procedure used to measure pressures in the anus and rectum to detect abnormalities of sphincter function, including coordination of the muscles that produce a bowel movement.

What Can You Expect?

During this test, a catheter embedded with pressure sensors and a balloon is inserted through the anus and into the rectum. Once in place, you will be asked to squeeze and bear down (attempt to empty your bowels) to assess for pressure changes. This procedure routinely is performed in combination with other tests, including a rectal sensory test and a balloon expulsion test. Once the tests are complete, the catheter is removed. The procedure only takes about 15 minutes, and you do not need a driver.

What Can Be Found?

Anorectal manometry is performed to determine if you have deficiencies in sphincter function. It is useful to evaluate symptoms such as chronic constipation, fecal incontinence, pain with defecation and functional anorectal pain. The procedure can also facilitate biofeedback training to identify/quantify changes in anal function, recto-anal coordination (during simulated defecation) or rectal sensitivity in response to the intervention.

How Can You Prepare?

You are required to do a Fleet^® enema (over the counter) bowel preparation. Nothing to eat or drink four hours prior to the study. If you take any muscle relaxing medications such as Reglan, stop 24 hours prior to the procedure. If you take heart, blood pressure or seizure medications, you may take them with a small amount of water up to two hours before the study. You may be encouraged to empty your bowels before the test if needed. Your doctor will advise you of any other restrictions.